ARM: configs: at91: sama7: Enable UBIFS_FS

sama7g5 contains a Static Memory Controller that can communicate with
NAND flashes. Enable UBIFS_FS in case one wants to put an ubifs rootfs
on a NAND flash. CONFIG_CRYPTO_LZO and CONFIG_CRYPTO_DEFLATE appear as
removed because they are selected by CONFIG_UBIFS_FS.

Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Link: https://lore.kernel.org/r/20220202070244.150022-1-tudor.ambarus@microchip.com